The present invention relates to a use of durian carpel extracts. Particularly, the present invention provides a use of durian carpel extracts for promoting the proliferation of skeletal muscle cells and the activity thereof. The durian carpel extracts according to the present invention can promote gene expression of SOD3 and NADSYN1, and inhibit gene expression of PARP1 and PARP2 such as to increase NAD+ content. Accordingly, the activity of mitochondria is increased and the muscle fatigue is improved so that more energy and power is increasingly provided.本發明係關於一種榴槤心皮萃取物之用途,提供了榴槤心皮萃取物於促進骨骼肌細胞增生、提升骨骼肌細胞活性以改善肌肉疲勞之用途。藉由本發明所製備的榴槤心皮萃取物,可促進SOD3或NADSYN1基因之表現以及抑制基因PARP1或PARP2的表現,因而可增加NAD+的產生,提升粒線體的活性,增加體力與精力而改善肌肉疲勞的問題。